Hello,
I have a SGS with ICS CM9 (Build 16) by teamhacksung and when the phone goes into standby, the internet connection change from wlan to 3g automatically.
How can I prevent this?
Check if there is a setting to prevent this behavior, your cm9 is in its early stages for your devices and if it is not there yet, it most likely will be at a later point.
For now you could use an app like this
https://play.google.com/store/apps/details?id=eu.thedarken.wl
to keep your device from going fully into standby.
Yes i have found an option to disable standby, but this works only when the battery is charging.
When i use this app to prevent the standby mode, the battery drains faster, or?
Yes, preventing standby will cause the cpu not to deep sleep, which will cost more energy.
Okay, thank you. Then I'll wait for a bugfix.
Related
Hi all!
well my battery phone its doing fine for 2 o 4 days, but, when i activate the Wifi, i can use it for 5 minutes, the turn it off (battery meter dosn´t move a little)... 6 o 8 hours then the phone start claiming for a recharge... what can be the problem? my Wifi dont turn it off propely?
try another radio rom and another rom(neo;wm 6.1 v.1.1 etc)
i too have the same problem. when wifi is on the battery drains very quickly. but it is not due to radio or rom. u can change the power mode settings of wifi from best performance to best battery.
when i did it, the battery lasted much longer as compared to earlier.
i too have the same problem previously but reflashing it works.
SAHILISTHEBEST said:
i too have the same problem. when wifi is on the battery drains very quickly. but it is not due to radio or rom. u can change the power mode settings of wifi from best performance to best battery.
when i did it, the battery lasted much longer as compared to earlier.
Click to expand...
Click to collapse
Yes, Wifi in best perf mode reduces my phone's standby time from several days to a merely few hours. Unfortunately, best battery gives me only an unstable connection. I originally intended to use the Vox as Skype client but abandoned my plans.
i always use all PC mobile systems (Pocket PC, Smarphone or Notebook) with WiFi settings in Power save... its seem the problem is between Coreplayer screen bug (solved with the config of Coreplayer) and Live Messenger, i am tsting now with some options
Hello there guys ..just wanted to post a quick question / add some findings i've seen with respect to the effect of toggling edge/wifi / 3G
I've had my phone for just around 10 days now, and have been noticing how quickly my battery life drops..
Until now, I had kept 3G + Wifi switched on (wifi toggled automatically with Y5-battery saver app), and, no matter how hard I policed background applications, my battery life would automatically fall at the rate of about 1% every 5 minutes (even if I were not using the phone, and it was just lying idle)...
Today, I tried switching off Wifi altogether, and forcing my network data to 2G ...my (probably flawed ) logic being that push notifications can happen even over edge/GPRS, and when I need to use more internet heavy applications, I could switch wifi/ 3G back on for the duration I needed it ..
I have been seeing pretty decent results over the past few hours ... battery has dropped just about 4% in the last 2 hours...i've attached a (crude) image of my battery usage screen, and on it, you can see the usage curve changing to a lower rate from about the same time I turned wifi off completely..
Could anyone with more knowledge about wifi/edge/3g battery usage pls let me know if this is a genuine improvement, or if its just some placebo effect
I'll continue monitoring it over the day and keep you guys posted
I believe battery usage from most to least goes:
3G
EDGE
Wifi
Sent from my Nexus S using Tapatalk
Thx hfm ... i think that's generally the order in which battery is consumed as well - EXCEPT when wifi reception is spotty..
I think what was happening until now was that the 'Y5 Battery saver' app was recognizing my 'home' as a location with a known wifi connection..and was constantly switching on / searching for wifi connections whenever I'm at home..
but the problem is that in some parts of my home, wifi reception is a bit spotty...so all that 'scanning' would happen for no good, and no connection would be fixed..
the battery saver didnt really save much battery then
I was wondering if there really isn't a way to disable my HTC Titan from turning off wifi when in sleep mode?
I have alot of push email, fb-sync, twitter-sync etc. And when it disables wifi in sleep, it uses 3g for these syncs, which has used my up dataplan of 200mb in 2 days (in android I didn't use the entire amount for a month), and 3g drains the battery ALOT faster than wifi does.
I would think the devs here at XDA would have been able to do something about this, but I can't find anything?
Thanks
man, this is a very old big problem, many topics like this have been discussed but the answer is simple: wait for Microsoft
If you leave the phone plugged in, it will use WiFi. If you plug it into a PC and the PC is running the Zune software, it will actually connect through the PC's Internet connection.
3G may drain the battery faster than WiFi when in active use, most likely because the 3G signal needs to be stronger (has to go further), but WiFi uses a lot more power than 3G when idle. Even with push email enabled, the connection will be idle almost all the time (if it weren't, you'd blow your 200MB in minutes, not days).
I'd suggest either disabling auto-sync or disabling cellular data if you're on such an incredibly limited data plan.
U are better off turning off the wifi,
Because the phone when in sleep mode and push update enabled does not use wifi to check for updates. The wifi is sleeping all the time unless on charger.
This is a design flaw .
I suggested that timed toggles should be implemented,
WIFI uses ALOT less battery then 3g. I know this because I now have managed to keep wifi alive when in sleep. If I keep spotify running in the background, that will keep the wifi running. Now the battery for my HTC Titan is at 60% after a full days use, in stead of 5% with 3g in sleep.
So if you want wifi alive, download spotify, start it, press start button, and use your phone as normal. When you make it go sleep, wifi will stay on.
Moved to WP7 Q&A
This is a question not development, Please post in correct sections.
Take it easy
O_G
matshako said:
WIFI uses ALOT less battery then 3g. I know this because I now have managed to keep wifi alive when in sleep. If I keep spotify running in the background, that will keep the wifi running. Now the battery for my HTC Titan is at 60% after a full days use, in stead of 5% with 3g in sleep.
So if you want wifi alive, download spotify, start it, press start button, and use your phone as normal. When you make it go sleep, wifi will stay on.
Click to expand...
Click to collapse
i will try....
yr titan only last 1 day in sleep under 3G. thats strange because the titan has a 1600 mah battery,
matshako said:
WIFI uses ALOT less battery then 3g. I know this because I now have managed to keep wifi alive when in sleep. If I keep spotify running in the background, that will keep the wifi running. Now the battery for my HTC Titan is at 60% after a full days use, in stead of 5% with 3g in sleep.
So if you want wifi alive, download spotify, start it, press start button, and use your phone as normal. When you make it go sleep, wifi will stay on.
Click to expand...
Click to collapse
Does anyone have any idea how Spotify does it? I have a developer unlocked phone, so I wonder if I can replicate it in code without having to run Spotify.
Basically I am on Nexus S JellyBean 100% STOCK and this issues is happening with work WIFI.
How I noticed it...when I am at home I drop 1% battery on Wifi per hour. 10hours = 10% (sometimes less).
I go to work on the Wifi, I DONT USE ANYTHING ON THE PHONE and the battery is DRAINING LIKE CRAZY!!! 5%/h or more!!!
( I am in airplane mode in both place)
So I was thinking, WTF with this work wifi, i am not doing anything at all on it. Then I look at my wifi icon I have a constant RECEIVE icon. And I bet my phone does not go to sleep or something.
So why in the world my work wifi is draining my battery and the one at home is not. I will check tonight but I dont think I have traffic like this. I am registering 5-6kbytes/s for nothing. There was an explanation given in one of the links below about existing wifi traffic that goes through my phone but I do not agree with it fully. YEs sure there are several pings and beacon emitted back and forth but i do not think it is enough to cause 5-6kbytes/sec . The wifi is not in Monitor mode and it only receives the packets destined to my phone.
This is madness!!!! BTW When I had a different kernel back on ICS this behavior stopped. I will try to monitor again. So there is definitely some kernel switch that can force the wifi to idle.
Here are the links where they discuss this somewhat.
http://forum.xda-developers.com/showthread.php?t=1738171
http://forums.androidcentral.com/verizon-galaxy-s-iii/188929-your-wifi-constantly-downloading.html
kalinusa said:
Basically I am on Nexus S JellyBean 100% STOCK and this issues is happening with work WIFI.
How I noticed it...when I am at home I drop 1% battery on Wifi per hour. 10hours = 10% (sometimes less).
I go to work on the Wifi, I DONT USE ANYTHING ON THE PHONE and the battery is DRAINING LIKE CRAZY!!! 5%/h or more!!!
( I am in airplane mode in both place)
So I was thinking, WTF with this work wifi, i am not doing anything at all on it. Then I look at my wifi icon I have a constant RECEIVE icon. And I bet my phone does not go to sleep or something.
So why in the world my work wifi is draining my battery and the one at home is not. I will check tonight but I dont think I have traffic like this. I am registering 5-6kbytes/s for nothing. There was an explanation given in one of the links below about existing wifi traffic that goes through my phone but I do not agree with it fully. YEs sure there are several pings and beacon emitted back and forth but i do not think it is enough to cause 5-6kbytes/sec . The wifi is not in Monitor mode and it only receives the packets destined to my phone.
This is madness!!!! BTW When I had a different kernel back on ICS this behavior stopped. I will try to monitor again. So there is definitely some kernel switch that can force the wifi to idle.
Here are the links where they discuss this somewhat.
http://forum.xda-developers.com/showthread.php?t=1738171
http://forums.androidcentral.com/verizon-galaxy-s-iii/188929-your-wifi-constantly-downloading.html
Click to expand...
Click to collapse
for now what u can do, is to set your wifi to go to sleep when the screen is off
Hey guys,
I've spent endless hours trying to find an answer to this bug. Here's the issue, which I'm sure some of you are aware of:
When connected to Wi-Fi (at home or work), "Android OS" is not letting my phone sleep, and I continue to see "wlan_rx_wake" as my top wakelock, which accounts for 30-50% of my kernel wakelocks. For example, I had the phone off the charger for 20 minutes and it only slept for 3, even though I didn't turn my screen on once.
From what I've read, this bug has to do with certain routers continuously polling the phone due to dynamic (DCHP) frequency settings.
Solutions that I've tried:
1. Setting the IP address to static AND setting the IP address to .210 (which is above the DCHP frequency range of .199).
2. Turning off the "Power Save" mode in the hidden Wi-Fi menu. This "fix" actually made my battery life worse on my home network. I lost 50% of my battery overnight in 6 hours, without touching the phone.
3. Using the "stock" settings.
No matter what I try, "wlan_rx_wake" (directly connected to Wi-Fi) continuously denies my phone from deep sleep. And "Android OS" is always equal to or greater than "Cell Standby" on my battery log when connected to Wi-Fi.
I would be forever grateful to anyone who can shed some light on this issue. It's a major bug for me due to Verizon's data caps. I want to continue to use Wi-Fi at work and at home, but this bug is a major deal breaker. Battery life on 4G is great, but like I said, I'd like to use Wi-Fi as much as possible. I'm really disappointed in such a serious bug from Samsung. And from what I've read elsewhere, it's a relatively common problem. Yet I haven't found a solution that has worked for me.
Thanks in advance,
Dan
Do you have any apple devices on your wifi network (or windows with apple bonjour service running)? If yes then you have bonjour requests wake locks. You can confirm this using Shark for Root (https://play.google.com/store/apps/details?id=lv.n3o.shark) and eliminate that using imo's leankernel 0.5 or newer (http://rootzwiki.com/topic/31329-kerneltouchwizics-leankernel-minimalistic-kernel-v10-10412/).
Turn off auto sync